gui2::ImportFileWidget Class Reference

Provides the possibility to select file names on disk and add them to list view. More...

Inheritance diagram for gui2::ImportFileWidget:

Collaboration diagram for gui2::ImportFileWidget:

Public Slots
QStringList	fileNames () const
	Retuns the list of all file names imported by the user. More...
void	onAddFilesRequest ()
	Summons dialog for file selections, update list view with file names. More...
void	onRemoveFileRequest ()
	Removes currently selected file. More...
QStringList	selectedFileNames () const
	Retuns the list of currently selected file names. More...

Signals
void	fileNamesChanged ()
void	fileSelectionChanged ()

Public Member Functions
	ImportFileWidget (QWidget *parent=nullptr)
	~ImportFileWidget ()

Private Member Functions
void	addFileNamesToModel (const QStringList &file_names)
	Adds given list of file names to the model. More...
void	makeLastSelected ()
void	readSettings ()
	Loads widget settings. More...
void	updateCurrentWorkdir (const QStringList &file_names)
	Updates current working dir. More...
QStringList	validateForBinaryFiles (const QStringList &file_names)
	Returns list validated for binary files. More...
void	writeSettings ()
	Writes widget settings. More...

Private Attributes
QString	m_currentWorkdir
QStringListModel *	m_listModel {nullptr}
QListView *	m_listView {nullptr}

Detailed Description

Provides the possibility to select file names on disk and add them to list view.

List represents names of ASCII files which will be later imported and parsed. Part of LoaderPreviewPanel.

Definition at line 30 of file importfilewidget.h.

Constructor & Destructor Documentation

ImportFileWidget()

gui2::ImportFileWidget::ImportFileWidget

(

QWidget *

parent = nullptr

)

Definition at line 39 of file importfilewidget.cpp.

    : QWidget(parent), m_listView(new QListView), m_listModel(new QStringListModel(this))
{
    readSettings();
 
    auto layout = new QVBoxLayout(this);
    layout->setContentsMargins(0, 0, 0, 0);
    layout->addWidget(m_listView);
 
    m_listView->setModel(m_listModel);
    m_listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
    m_listView->setAlternatingRowColors(true);
    m_listView->setSelectionMode(QAbstractItemView::ExtendedSelection);
 
    connect(m_listView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
            &ImportFileWidget::fileSelectionChanged);
}

References fileSelectionChanged(), m_listModel, m_listView, and readSettings().

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~ImportFileWidget()

gui2::ImportFileWidget::~ImportFileWidget

(

)

Definition at line 57 of file importfilewidget.cpp.

{
    writeSettings();
}

References writeSettings().

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Member Function Documentation

addFileNamesToModel()

void gui2::ImportFileWidget::addFileNamesToModel ( const QStringList &  file_names )

private

Adds given list of file names to the model.

Definition at line 163 of file importfilewidget.cpp.

{
    auto current_names = fileNames();
    QStringList updated_names = current_names + file_names;
    updated_names.removeDuplicates();
    m_listModel->setStringList(updated_names);
 
    emit fileNamesChanged();
 
    makeLastSelected();
}

References fileNames(), fileNamesChanged(), m_listModel, and makeLastSelected().

Referenced by onAddFilesRequest().

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fileNames

QStringList gui2::ImportFileWidget::fileNames ( ) const

slot

Retuns the list of all file names imported by the user.

Definition at line 98 of file importfilewidget.cpp.

{
    return m_listModel->stringList();
}

References m_listModel.

Referenced by addFileNamesToModel(), gui2::LoaderSelectorPanel::fileNames(), and gui2::LoaderSelectorPanel::init_connections().

fileNamesChanged

void gui2::ImportFileWidget::fileNamesChanged ( )

signal

Referenced by addFileNamesToModel(), gui2::LoaderSelectorPanel::init_connections(), and onRemoveFileRequest().

fileSelectionChanged

void gui2::ImportFileWidget::fileSelectionChanged ( )

signal

Referenced by ImportFileWidget(), and gui2::LoaderSelectorPanel::init_connections().

makeLastSelected()

void gui2::ImportFileWidget::makeLastSelected ( )

private

Definition at line 175 of file importfilewidget.cpp.

{
    if (m_listView->selectionModel()->selectedIndexes().empty()) {
        auto flags = QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows;
        auto toSelect = m_listModel->index(m_listModel->rowCount() - 1);
        m_listView->selectionModel()->select(toSelect, flags);
    }
}

References m_listModel, and m_listView.

Referenced by addFileNamesToModel(), and onRemoveFileRequest().

onAddFilesRequest

void gui2::ImportFileWidget::onAddFilesRequest ( )

slot

Summons dialog for file selections, update list view with file names.

Definition at line 64 of file importfilewidget.cpp.

{
    QFileDialog dialog(this, "Select one or more files to load", m_currentWorkdir);
    dialog.setFileMode(QFileDialog::ExistingFiles);
    dialog.setNameFilter("Text (*.txt *.csv *.dat);; Other (*.*)");
    dialog.setOption(QFileDialog::DontUseNativeDialog);
    QStringList file_names = dialog.exec() ? dialog.selectedFiles() : QStringList();
 
    file_names = validateForBinaryFiles(file_names);
 
    if (file_names.empty())
        return;
 
    updateCurrentWorkdir(file_names);
    addFileNamesToModel(file_names);
}

References addFileNamesToModel(), m_currentWorkdir, updateCurrentWorkdir(), and validateForBinaryFiles().

Referenced by gui2::LoaderSelectorPanel::onAddFilesRequest().

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onRemoveFileRequest

void gui2::ImportFileWidget::onRemoveFileRequest ( )

slot

Removes currently selected file.

Definition at line 83 of file importfilewidget.cpp.

{
    auto selected = m_listView->selectionModel()->selectedIndexes();
    while (!selected.empty()) {
        m_listModel->removeRow(selected.back().row());
        selected = m_listView->selectionModel()->selectedIndexes();
    }
 
    emit fileNamesChanged();
 
    makeLastSelected();
}

References fileNamesChanged(), m_listModel, m_listView, and makeLastSelected().

Referenced by gui2::LoaderSelectorPanel::onRemoveFileRequest().

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readSettings()

void gui2::ImportFileWidget::readSettings ( )

private

Loads widget settings.

Definition at line 115 of file importfilewidget.cpp.

{
    QSettings settings;
    m_currentWorkdir = QDir::homePath();
 
    if (settings.contains(workdir_setting_name()))
        m_currentWorkdir = settings.value(workdir_setting_name()).toString();
}

References m_currentWorkdir.

Referenced by ImportFileWidget().

selectedFileNames

QStringList gui2::ImportFileWidget::selectedFileNames ( ) const

slot

Retuns the list of currently selected file names.

Definition at line 105 of file importfilewidget.cpp.

{
    QStringList result;
    for (auto index : m_listView->selectionModel()->selectedIndexes())
        result.append(m_listModel->data(index).toString());
    return result;
}

References m_listModel, and m_listView.

Referenced by gui2::LoaderSelectorPanel::init_connections(), and gui2::LoaderSelectorPanel::selectedFileNames().

updateCurrentWorkdir()

void gui2::ImportFileWidget::updateCurrentWorkdir ( const QStringList &  file_names )

private

Updates current working dir.

Definition at line 154 of file importfilewidget.cpp.

{
    auto file_name = file_names.back();
    auto parent_path = ModelView::Utils::parent_path(file_name.toStdString());
    m_currentWorkdir = QString::fromStdString(parent_path);
}

References m_currentWorkdir, and ModelView::Utils::parent_path().

Referenced by onAddFilesRequest().

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validateForBinaryFiles()

QStringList gui2::ImportFileWidget::validateForBinaryFiles ( const QStringList &  file_names )

private

Returns list validated for binary files.

Definition at line 134 of file importfilewidget.cpp.

{
    QStringList result;
    for (const auto& file_name : file_names) {
        if (ModelView::Utils::is_binary(file_name.toStdString())) {
            QMessageBox msgBox;
            msgBox.setText(file_name + "\nmay be a binary file. Open it anyway?");
            msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
            int ret = msgBox.exec();
            if (ret == QMessageBox::Yes)
                result.push_back(file_name);
        } else {
            result.push_back(file_name);
        }
    }
    return result;
}

References ModelView ::Utils::is_binary().

Referenced by onAddFilesRequest().

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writeSettings()

void gui2::ImportFileWidget::writeSettings ( )

private

Writes widget settings.

Definition at line 126 of file importfilewidget.cpp.

{
    QSettings settings;
    settings.setValue(workdir_setting_name(), m_currentWorkdir);
}

References m_currentWorkdir.

Referenced by ~ImportFileWidget().

Member Data Documentation

m_currentWorkdir

QString gui2::ImportFileWidget::m_currentWorkdir

private

Definition at line 62 of file importfilewidget.h.

Referenced by onAddFilesRequest(), readSettings(), updateCurrentWorkdir(), and writeSettings().

m_listModel

QStringListModel* gui2::ImportFileWidget::m_listModel {nullptr}

private

Definition at line 61 of file importfilewidget.h.

Referenced by ImportFileWidget(), addFileNamesToModel(), fileNames(), makeLastSelected(), onRemoveFileRequest(), and selectedFileNames().

m_listView

QListView* gui2::ImportFileWidget::m_listView {nullptr}

private

Definition at line 60 of file importfilewidget.h.

Referenced by ImportFileWidget(), makeLastSelected(), onRemoveFileRequest(), and selectedFileNames().

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The documentation for this class was generated from the following files:

• /home/www/ba/gui2/dataloader/importfilewidget.h
• /home/www/ba/gui2/dataloader/importfilewidget.cpp